First cut at RDF parser in libwww

Thanks to John Punin, we now have an RDF parser in libwww. It is based
on Janne Saarela's SiRPAC [1] Java RDF parser and runs on top of James
Clark's Expat parser which John also wrote a libwww module for [2]. The
parser has been added as part of this XML module.

There are some sample RDF files available [3] but because our server
still sends text/plain they are not passed to the RDF parser but instead
treated as - guess what - plain text.

John also wrote two sample applications [4] showing how to use the RDF
parser and various converters presenting triples in different ways.

Get the code from CVS as usual:

	http://www.w3.org/Library/cvs.html#update

and recompile as described in

	http://www.w3.org/Library/cvs.html#Easy

This is really cool stuff!

Henrik

[1] http://www.w3.org/RDF/Implementations/SiRPAC/
[2] http://www.w3.org/Library/User/Guide/#HTML1
[3] http://www.w3.org/Library/Examples/RDF/
[4] http://www.w3.org/Library/Examples/#XML